Application of Taguchi Method and Genetic Algorithm for Calibration of Soil Constitutive Models

Table 1

HS input parameters [3].

Basic parameters	Explanation	Initial estimates
𝑐	Cohesion	𝑦-axis intercept in 𝜎𝑛−𝜏 stress space
𝜑	Friction angle	Slope of failure line in 𝜎𝑛−𝜏 stress space
𝜓	Dilatancy angle	Function of 𝜑peak and 𝜑failure
𝐸^ref50	Secant stiffness in standard drained triaxial test	𝑦-axis intercept in log(𝜎3/𝑃ref) − log(𝐸50) space
𝐸^refoed	Tangent stiffness for primary oedometer loading	𝑦-axis intercept in log(𝜎𝑣/𝑃ref) − log(𝐸50) space
𝑚	Power for stress-level dependency of stiffness	Slope of trend line in log(𝜎3/𝑃ref) − log(𝐸50) space